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Merge tag 'reset-fixes-for-4.14' of git://git.pengutronix.de/git/pza/linux into fixes
[mirror_ubuntu-bionic-kernel.git] / net / sched / cls_flower.c
CommitLineData
77b9900e
JP		 1/*
2 * net/sched/cls_flower.c Flower classifier
3 *
4 * Copyright (c) 2015 Jiri Pirko <jiri@resnulli.us>
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
10 */
11
12#include <linux/kernel.h>
13#include <linux/init.h>
14#include <linux/module.h>
15#include <linux/rhashtable.h>
d9363774 16#include <linux/workqueue.h>
77b9900e
JP		 17
18#include <linux/if_ether.h>
19#include <linux/in6.h>
20#include <linux/ip.h>
a577d8f7 21#include <linux/mpls.h>
77b9900e
JP		 22
23#include <net/sch_generic.h>
24#include <net/pkt_cls.h>
25#include <net/ip.h>
26#include <net/flow_dissector.h>
27
bc3103f1
AV		 28#include <net/dst.h>
29#include <net/dst_metadata.h>
30
77b9900e
JP		 31struct fl_flow_key {
32 int indev_ifindex;
42aecaa9 33 struct flow_dissector_key_control control;
bc3103f1 34 struct flow_dissector_key_control enc_control;
77b9900e
JP		 35 struct flow_dissector_key_basic basic;
36 struct flow_dissector_key_eth_addrs eth;
9399ae9a 37 struct flow_dissector_key_vlan vlan;
77b9900e 38 union {
c3f83241 39 struct flow_dissector_key_ipv4_addrs ipv4;
77b9900e
JP		 40 struct flow_dissector_key_ipv6_addrs ipv6;
41 };
42 struct flow_dissector_key_ports tp;
7b684884 43 struct flow_dissector_key_icmp icmp;
99d31326 44 struct flow_dissector_key_arp arp;
bc3103f1
AV		 45 struct flow_dissector_key_keyid enc_key_id;
46 union {
47 struct flow_dissector_key_ipv4_addrs enc_ipv4;
48 struct flow_dissector_key_ipv6_addrs enc_ipv6;
49 };
f4d997fd 50 struct flow_dissector_key_ports enc_tp;
a577d8f7 51 struct flow_dissector_key_mpls mpls;
fdfc7dd6 52 struct flow_dissector_key_tcp tcp;
4d80cc0a 53 struct flow_dissector_key_ip ip;
77b9900e
JP		 54} __aligned(BITS_PER_LONG / 8); /* Ensure that we can do comparisons as longs. */
55
56struct fl_flow_mask_range {
57 unsigned short int start;
58 unsigned short int end;
59};
60
61struct fl_flow_mask {
62 struct fl_flow_key key;
63 struct fl_flow_mask_range range;
64 struct rcu_head rcu;
65};
66
67struct cls_fl_head {
68 struct rhashtable ht;
69 struct fl_flow_mask mask;
70 struct flow_dissector dissector;
77b9900e
JP		 71 bool mask_assigned;
72 struct list_head filters;
73 struct rhashtable_params ht_params;
d9363774
DB		 74 union {
75 struct work_struct work;
76 struct rcu_head rcu;
77 };
c15ab236 78 struct idr handle_idr;
77b9900e
JP		 79};
80
81struct cls_fl_filter {
82 struct rhash_head ht_node;
83 struct fl_flow_key mkey;
84 struct tcf_exts exts;
85 struct tcf_result res;
86 struct fl_flow_key key;
87 struct list_head list;
88 u32 handle;
e69985c6 89 u32 flags;
77b9900e 90 struct rcu_head rcu;
7091d8c7 91 struct net_device *hw_dev;
77b9900e
JP		 92};
93
94static unsigned short int fl_mask_range(const struct fl_flow_mask *mask)
95{
96 return mask->range.end - mask->range.start;
97}
98
99static void fl_mask_update_range(struct fl_flow_mask *mask)
100{
101 const u8 *bytes = (const u8 *) &mask->key;
102 size_t size = sizeof(mask->key);
103 size_t i, first = 0, last = size - 1;
104
105 for (i = 0; i < sizeof(mask->key); i++) {
106 if (bytes[i]) {
107 if (!first && i)
108 first = i;
109 last = i;
110 }
111 }
112 mask->range.start = rounddown(first, sizeof(long));
113 mask->range.end = roundup(last + 1, sizeof(long));
114}
115
116static void *fl_key_get_start(struct fl_flow_key *key,
117 const struct fl_flow_mask *mask)
118{
119 return (u8 *) key + mask->range.start;
120}
121
122static void fl_set_masked_key(struct fl_flow_key *mkey, struct fl_flow_key *key,
123 struct fl_flow_mask *mask)
124{
125 const long *lkey = fl_key_get_start(key, mask);
126 const long *lmask = fl_key_get_start(&mask->key, mask);
127 long *lmkey = fl_key_get_start(mkey, mask);
128 int i;
129
130 for (i = 0; i < fl_mask_range(mask); i += sizeof(long))
131 *lmkey++ = *lkey++ & *lmask++;
132}
133
134static void fl_clear_masked_range(struct fl_flow_key *key,
135 struct fl_flow_mask *mask)
136{
137 memset(fl_key_get_start(key, mask), 0, fl_mask_range(mask));
138}
139
a3308d8f
PB		 140static struct cls_fl_filter *fl_lookup(struct cls_fl_head *head,
141 struct fl_flow_key *mkey)
142{
143 return rhashtable_lookup_fast(&head->ht,
144 fl_key_get_start(mkey, &head->mask),
145 head->ht_params);
146}
147
77b9900e
JP		 148static int fl_classify(struct sk_buff *skb, const struct tcf_proto *tp,
149 struct tcf_result *res)
150{
151 struct cls_fl_head *head = rcu_dereference_bh(tp->root);
152 struct cls_fl_filter *f;
153 struct fl_flow_key skb_key;
154 struct fl_flow_key skb_mkey;
bc3103f1 155 struct ip_tunnel_info *info;
77b9900e 156
e69985c6
AV		 157 if (!atomic_read(&head->ht.nelems))
158 return -1;
159
77b9900e 160 fl_clear_masked_range(&skb_key, &head->mask);
bc3103f1
AV		 161
162 info = skb_tunnel_info(skb);
163 if (info) {
164 struct ip_tunnel_key *key = &info->key;
165
166 switch (ip_tunnel_info_af(info)) {
167 case AF_INET:
0df0f207
PB		 168 skb_key.enc_control.addr_type =
169 FLOW_DISSECTOR_KEY_IPV4_ADDRS;
bc3103f1
AV		 170 skb_key.enc_ipv4.src = key->u.ipv4.src;
171 skb_key.enc_ipv4.dst = key->u.ipv4.dst;
172 break;
173 case AF_INET6:
0df0f207
PB		 174 skb_key.enc_control.addr_type =
175 FLOW_DISSECTOR_KEY_IPV6_ADDRS;
bc3103f1
AV		 176 skb_key.enc_ipv6.src = key->u.ipv6.src;
177 skb_key.enc_ipv6.dst = key->u.ipv6.dst;
178 break;
179 }
180
181 skb_key.enc_key_id.keyid = tunnel_id_to_key32(key->tun_id);
f4d997fd
HHZ		 182 skb_key.enc_tp.src = key->tp_src;
183 skb_key.enc_tp.dst = key->tp_dst;
bc3103f1
AV		 184 }
185
77b9900e
JP		 186 skb_key.indev_ifindex = skb->skb_iif;
187 /* skb_flow_dissect() does not set n_proto in case an unknown protocol,
188 * so do it rather here.
189 */
190 skb_key.basic.n_proto = skb->protocol;
cd79a238 191 skb_flow_dissect(skb, &head->dissector, &skb_key, 0);
77b9900e
JP		 192
193 fl_set_masked_key(&skb_mkey, &skb_key, &head->mask);
194
a3308d8f 195 f = fl_lookup(head, &skb_mkey);
e8eb36cd 196 if (f && !tc_skip_sw(f->flags)) {
77b9900e
JP		 197 *res = f->res;
198 return tcf_exts_exec(skb, &f->exts, res);
199 }
200 return -1;
201}
202
203static int fl_init(struct tcf_proto *tp)
204{
205 struct cls_fl_head *head;
206
207 head = kzalloc(sizeof(*head), GFP_KERNEL);
208 if (!head)
209 return -ENOBUFS;
210
211 INIT_LIST_HEAD_RCU(&head->filters);
212 rcu_assign_pointer(tp->root, head);
c15ab236 213 idr_init(&head->handle_idr);
77b9900e
JP		 214
215 return 0;
216}
217
218static void fl_destroy_filter(struct rcu_head *head)
219{
220 struct cls_fl_filter *f = container_of(head, struct cls_fl_filter, rcu);
221
222 tcf_exts_destroy(&f->exts);
223 kfree(f);
224}
225
3036dab6 226static void fl_hw_destroy_filter(struct tcf_proto *tp, struct cls_fl_filter *f)
5b33f488 227{
de4784ca 228 struct tc_cls_flower_offload cls_flower = {};
7091d8c7 229 struct net_device *dev = f->hw_dev;
5b33f488 230
7b06e8ae 231 if (!tc_can_offload(dev))
5b33f488
AV		 232 return;
233
de4784ca
JP		 234 tc_cls_common_offload_init(&cls_flower.common, tp);
235 cls_flower.command = TC_CLSFLOWER_DESTROY;
236 cls_flower.cookie = (unsigned long) f;
5b33f488 237
de4784ca 238 dev->netdev_ops->ndo_setup_tc(dev, TC_SETUP_CLSFLOWER, &cls_flower);
5b33f488
AV		 239}
240
e8eb36cd
AV		 241static int fl_hw_replace_filter(struct tcf_proto *tp,
242 struct flow_dissector *dissector,
243 struct fl_flow_key *mask,
3036dab6 244 struct cls_fl_filter *f)
5b33f488
AV		 245{
246 struct net_device *dev = tp->q->dev_queue->dev;
de4784ca 247 struct tc_cls_flower_offload cls_flower = {};
e8eb36cd 248 int err;
5b33f488 249
7b06e8ae 250 if (!tc_can_offload(dev)) {
a6e16931 251 if (tcf_exts_get_dev(dev, &f->exts, &f->hw_dev) ||
7b06e8ae 252 (f->hw_dev && !tc_can_offload(f->hw_dev))) {
a6e16931 253 f->hw_dev = dev;
7091d8c7 254 return tc_skip_sw(f->flags) ? -EINVAL : 0;
a6e16931 255 }
7091d8c7 256 dev = f->hw_dev;
de4784ca 257 cls_flower.egress_dev = true;
7091d8c7
HHZ		 258 } else {
259 f->hw_dev = dev;
260 }
5b33f488 261
de4784ca
JP		 262 tc_cls_common_offload_init(&cls_flower.common, tp);
263 cls_flower.command = TC_CLSFLOWER_REPLACE;
264 cls_flower.cookie = (unsigned long) f;
265 cls_flower.dissector = dissector;
266 cls_flower.mask = mask;
267 cls_flower.key = &f->mkey;
268 cls_flower.exts = &f->exts;
5b33f488 269
de4784ca
JP		 270 err = dev->netdev_ops->ndo_setup_tc(dev, TC_SETUP_CLSFLOWER,
271 &cls_flower);
55593960
OG		 272 if (!err)
273 f->flags |= TCA_CLS_FLAGS_IN_HW;
e8eb36cd 274
3036dab6 275 if (tc_skip_sw(f->flags))
e8eb36cd 276 return err;
e8eb36cd 277 return 0;
5b33f488
AV		 278}
279
10cbc684
AV		 280static void fl_hw_update_stats(struct tcf_proto *tp, struct cls_fl_filter *f)
281{
de4784ca 282 struct tc_cls_flower_offload cls_flower = {};
7091d8c7 283 struct net_device *dev = f->hw_dev;
10cbc684 284
7b06e8ae 285 if (!tc_can_offload(dev))
10cbc684
AV		 286 return;
287
de4784ca
JP		 288 tc_cls_common_offload_init(&cls_flower.common, tp);
289 cls_flower.command = TC_CLSFLOWER_STATS;
290 cls_flower.cookie = (unsigned long) f;
291 cls_flower.exts = &f->exts;
10cbc684 292
d978db8d 293 dev->netdev_ops->ndo_setup_tc(dev, TC_SETUP_CLSFLOWER,
de4784ca 294 &cls_flower);
10cbc684
AV		 295}
296
13fa876e
RD		 297static void __fl_delete(struct tcf_proto *tp, struct cls_fl_filter *f)
298{
c15ab236
CM		 299 struct cls_fl_head *head = rtnl_dereference(tp->root);
300
301 idr_remove_ext(&head->handle_idr, f->handle);
13fa876e 302 list_del_rcu(&f->list);
79685219 303 if (!tc_skip_hw(f->flags))
3036dab6 304 fl_hw_destroy_filter(tp, f);
13fa876e
RD		 305 tcf_unbind_filter(tp, &f->res);
306 call_rcu(&f->rcu, fl_destroy_filter);
307}
308
d9363774
DB		 309static void fl_destroy_sleepable(struct work_struct *work)
310{
311 struct cls_fl_head *head = container_of(work, struct cls_fl_head,
312 work);
313 if (head->mask_assigned)
314 rhashtable_destroy(&head->ht);
315 kfree(head);
316 module_put(THIS_MODULE);
317}
318
319static void fl_destroy_rcu(struct rcu_head *rcu)
320{
321 struct cls_fl_head *head = container_of(rcu, struct cls_fl_head, rcu);
322
323 INIT_WORK(&head->work, fl_destroy_sleepable);
324 schedule_work(&head->work);
325}
326
763dbf63 327static void fl_destroy(struct tcf_proto *tp)
77b9900e
JP		 328{
329 struct cls_fl_head *head = rtnl_dereference(tp->root);
330 struct cls_fl_filter *f, *next;
331
13fa876e
RD		 332 list_for_each_entry_safe(f, next, &head->filters, list)
333 __fl_delete(tp, f);
c15ab236 334 idr_destroy(&head->handle_idr);
d9363774
DB		 335
336 __module_get(THIS_MODULE);
337 call_rcu(&head->rcu, fl_destroy_rcu);
77b9900e
JP		 338}
339
8113c095 340static void *fl_get(struct tcf_proto *tp, u32 handle)
77b9900e
JP		 341{
342 struct cls_fl_head *head = rtnl_dereference(tp->root);
77b9900e 343
c15ab236 344 return idr_find_ext(&head->handle_idr, handle);
77b9900e
JP		 345}
346
347static const struct nla_policy fl_policy[TCA_FLOWER_MAX + 1] = {
348 [TCA_FLOWER_UNSPEC] = { .type = NLA_UNSPEC },
349 [TCA_FLOWER_CLASSID] = { .type = NLA_U32 },
350 [TCA_FLOWER_INDEV] = { .type = NLA_STRING,
351 .len = IFNAMSIZ },
352 [TCA_FLOWER_KEY_ETH_DST] = { .len = ETH_ALEN },
353 [TCA_FLOWER_KEY_ETH_DST_MASK] = { .len = ETH_ALEN },
354 [TCA_FLOWER_KEY_ETH_SRC] = { .len = ETH_ALEN },
355 [TCA_FLOWER_KEY_ETH_SRC_MASK] = { .len = ETH_ALEN },
356 [TCA_FLOWER_KEY_ETH_TYPE] = { .type = NLA_U16 },
357 [TCA_FLOWER_KEY_IP_PROTO] = { .type = NLA_U8 },
358 [TCA_FLOWER_KEY_IPV4_SRC] = { .type = NLA_U32 },
359 [TCA_FLOWER_KEY_IPV4_SRC_MASK] = { .type = NLA_U32 },
360 [TCA_FLOWER_KEY_IPV4_DST] = { .type = NLA_U32 },
361 [TCA_FLOWER_KEY_IPV4_DST_MASK] = { .type = NLA_U32 },
362 [TCA_FLOWER_KEY_IPV6_SRC] = { .len = sizeof(struct in6_addr) },
363 [TCA_FLOWER_KEY_IPV6_SRC_MASK] = { .len = sizeof(struct in6_addr) },
364 [TCA_FLOWER_KEY_IPV6_DST] = { .len = sizeof(struct in6_addr) },
365 [TCA_FLOWER_KEY_IPV6_DST_MASK] = { .len = sizeof(struct in6_addr) },
366 [TCA_FLOWER_KEY_TCP_SRC] = { .type = NLA_U16 },
367 [TCA_FLOWER_KEY_TCP_DST] = { .type = NLA_U16 },
b175c3a4
JHS		 368 [TCA_FLOWER_KEY_UDP_SRC] = { .type = NLA_U16 },
369 [TCA_FLOWER_KEY_UDP_DST] = { .type = NLA_U16 },
9399ae9a
HHZ		 370 [TCA_FLOWER_KEY_VLAN_ID] = { .type = NLA_U16 },
371 [TCA_FLOWER_KEY_VLAN_PRIO] = { .type = NLA_U8 },
372 [TCA_FLOWER_KEY_VLAN_ETH_TYPE] = { .type = NLA_U16 },
bc3103f1
AV		 373 [TCA_FLOWER_KEY_ENC_KEY_ID] = { .type = NLA_U32 },
374 [TCA_FLOWER_KEY_ENC_IPV4_SRC] = { .type = NLA_U32 },
375 [TCA_FLOWER_KEY_ENC_IPV4_SRC_MASK] = { .type = NLA_U32 },
376 [TCA_FLOWER_KEY_ENC_IPV4_DST] = { .type = NLA_U32 },
377 [TCA_FLOWER_KEY_ENC_IPV4_DST_MASK] = { .type = NLA_U32 },
378 [TCA_FLOWER_KEY_ENC_IPV6_SRC] = { .len = sizeof(struct in6_addr) },
379 [TCA_FLOWER_KEY_ENC_IPV6_SRC_MASK] = { .len = sizeof(struct in6_addr) },
380 [TCA_FLOWER_KEY_ENC_IPV6_DST] = { .len = sizeof(struct in6_addr) },
381 [TCA_FLOWER_KEY_ENC_IPV6_DST_MASK] = { .len = sizeof(struct in6_addr) },
aa72d708
OG		 382 [TCA_FLOWER_KEY_TCP_SRC_MASK] = { .type = NLA_U16 },
383 [TCA_FLOWER_KEY_TCP_DST_MASK] = { .type = NLA_U16 },
384 [TCA_FLOWER_KEY_UDP_SRC_MASK] = { .type = NLA_U16 },
385 [TCA_FLOWER_KEY_UDP_DST_MASK] = { .type = NLA_U16 },
5976c5f4
SH		 386 [TCA_FLOWER_KEY_SCTP_SRC_MASK] = { .type = NLA_U16 },
387 [TCA_FLOWER_KEY_SCTP_DST_MASK] = { .type = NLA_U16 },
388 [TCA_FLOWER_KEY_SCTP_SRC] = { .type = NLA_U16 },
389 [TCA_FLOWER_KEY_SCTP_DST] = { .type = NLA_U16 },
f4d997fd
HHZ		 390 [TCA_FLOWER_KEY_ENC_UDP_SRC_PORT] = { .type = NLA_U16 },
391 [TCA_FLOWER_KEY_ENC_UDP_SRC_PORT_MASK] = { .type = NLA_U16 },
392 [TCA_FLOWER_KEY_ENC_UDP_DST_PORT] = { .type = NLA_U16 },
393 [TCA_FLOWER_KEY_ENC_UDP_DST_PORT_MASK] = { .type = NLA_U16 },
faa3ffce
OG		 394 [TCA_FLOWER_KEY_FLAGS] = { .type = NLA_U32 },
395 [TCA_FLOWER_KEY_FLAGS_MASK] = { .type = NLA_U32 },
7b684884
SH		 396 [TCA_FLOWER_KEY_ICMPV4_TYPE] = { .type = NLA_U8 },
397 [TCA_FLOWER_KEY_ICMPV4_TYPE_MASK] = { .type = NLA_U8 },
398 [TCA_FLOWER_KEY_ICMPV4_CODE] = { .type = NLA_U8 },
399 [TCA_FLOWER_KEY_ICMPV4_CODE_MASK] = { .type = NLA_U8 },
400 [TCA_FLOWER_KEY_ICMPV6_TYPE] = { .type = NLA_U8 },
401 [TCA_FLOWER_KEY_ICMPV6_TYPE_MASK] = { .type = NLA_U8 },
402 [TCA_FLOWER_KEY_ICMPV6_CODE] = { .type = NLA_U8 },
403 [TCA_FLOWER_KEY_ICMPV6_CODE_MASK] = { .type = NLA_U8 },
99d31326
SH		 404 [TCA_FLOWER_KEY_ARP_SIP] = { .type = NLA_U32 },
405 [TCA_FLOWER_KEY_ARP_SIP_MASK] = { .type = NLA_U32 },
406 [TCA_FLOWER_KEY_ARP_TIP] = { .type = NLA_U32 },
407 [TCA_FLOWER_KEY_ARP_TIP_MASK] = { .type = NLA_U32 },
408 [TCA_FLOWER_KEY_ARP_OP] = { .type = NLA_U8 },
409 [TCA_FLOWER_KEY_ARP_OP_MASK] = { .type = NLA_U8 },
410 [TCA_FLOWER_KEY_ARP_SHA] = { .len = ETH_ALEN },
411 [TCA_FLOWER_KEY_ARP_SHA_MASK] = { .len = ETH_ALEN },
412 [TCA_FLOWER_KEY_ARP_THA] = { .len = ETH_ALEN },
413 [TCA_FLOWER_KEY_ARP_THA_MASK] = { .len = ETH_ALEN },
a577d8f7
BL		 414 [TCA_FLOWER_KEY_MPLS_TTL] = { .type = NLA_U8 },
415 [TCA_FLOWER_KEY_MPLS_BOS] = { .type = NLA_U8 },
416 [TCA_FLOWER_KEY_MPLS_TC] = { .type = NLA_U8 },
417 [TCA_FLOWER_KEY_MPLS_LABEL] = { .type = NLA_U32 },
fdfc7dd6
JP		 418 [TCA_FLOWER_KEY_TCP_FLAGS] = { .type = NLA_U16 },
419 [TCA_FLOWER_KEY_TCP_FLAGS_MASK] = { .type = NLA_U16 },
4d80cc0a
OG		 420 [TCA_FLOWER_KEY_IP_TOS] = { .type = NLA_U8 },
421 [TCA_FLOWER_KEY_IP_TOS_MASK] = { .type = NLA_U8 },
422 [TCA_FLOWER_KEY_IP_TTL] = { .type = NLA_U8 },
423 [TCA_FLOWER_KEY_IP_TTL_MASK] = { .type = NLA_U8 },
77b9900e
JP		 424};
425
426static void fl_set_key_val(struct nlattr **tb,
427 void *val, int val_type,
428 void *mask, int mask_type, int len)
429{
430 if (!tb[val_type])
431 return;
432 memcpy(val, nla_data(tb[val_type]), len);
433 if (mask_type == TCA_FLOWER_UNSPEC || !tb[mask_type])
434 memset(mask, 0xff, len);
435 else
436 memcpy(mask, nla_data(tb[mask_type]), len);
437}
438
1a7fca63
BL		 439static int fl_set_key_mpls(struct nlattr **tb,
440 struct flow_dissector_key_mpls *key_val,
441 struct flow_dissector_key_mpls *key_mask)
a577d8f7
BL		 442{
443 if (tb[TCA_FLOWER_KEY_MPLS_TTL]) {
444 key_val->mpls_ttl = nla_get_u8(tb[TCA_FLOWER_KEY_MPLS_TTL]);
445 key_mask->mpls_ttl = MPLS_TTL_MASK;
446 }
447 if (tb[TCA_FLOWER_KEY_MPLS_BOS]) {
1a7fca63
BL		 448 u8 bos = nla_get_u8(tb[TCA_FLOWER_KEY_MPLS_BOS]);
449
450 if (bos & ~MPLS_BOS_MASK)
451 return -EINVAL;
452 key_val->mpls_bos = bos;
a577d8f7
BL		 453 key_mask->mpls_bos = MPLS_BOS_MASK;
454 }
455 if (tb[TCA_FLOWER_KEY_MPLS_TC]) {
1a7fca63
BL		 456 u8 tc = nla_get_u8(tb[TCA_FLOWER_KEY_MPLS_TC]);
457
458 if (tc & ~MPLS_TC_MASK)
459 return -EINVAL;
460 key_val->mpls_tc = tc;
a577d8f7
BL		 461 key_mask->mpls_tc = MPLS_TC_MASK;
462 }
463 if (tb[TCA_FLOWER_KEY_MPLS_LABEL]) {
1a7fca63
BL		 464 u32 label = nla_get_u32(tb[TCA_FLOWER_KEY_MPLS_LABEL]);
465
466 if (label & ~MPLS_LABEL_MASK)
467 return -EINVAL;
468 key_val->mpls_label = label;
a577d8f7
BL		 469 key_mask->mpls_label = MPLS_LABEL_MASK;
470 }
1a7fca63 471 return 0;
a577d8f7
BL		 472}
473
9399ae9a
HHZ		 474static void fl_set_key_vlan(struct nlattr **tb,
475 struct flow_dissector_key_vlan *key_val,
476 struct flow_dissector_key_vlan *key_mask)
477{
478#define VLAN_PRIORITY_MASK 0x7
479
480 if (tb[TCA_FLOWER_KEY_VLAN_ID]) {
481 key_val->vlan_id =
482 nla_get_u16(tb[TCA_FLOWER_KEY_VLAN_ID]) & VLAN_VID_MASK;
483 key_mask->vlan_id = VLAN_VID_MASK;
484 }
485 if (tb[TCA_FLOWER_KEY_VLAN_PRIO]) {
486 key_val->vlan_priority =
487 nla_get_u8(tb[TCA_FLOWER_KEY_VLAN_PRIO]) &
488 VLAN_PRIORITY_MASK;
489 key_mask->vlan_priority = VLAN_PRIORITY_MASK;
490 }
491}
492
faa3ffce
OG		 493static void fl_set_key_flag(u32 flower_key, u32 flower_mask,
494 u32 *dissector_key, u32 *dissector_mask,
495 u32 flower_flag_bit, u32 dissector_flag_bit)
496{
497 if (flower_mask & flower_flag_bit) {
498 *dissector_mask |= dissector_flag_bit;
499 if (flower_key & flower_flag_bit)
500 *dissector_key |= dissector_flag_bit;
501 }
502}
503
d9724772
OG		 504static int fl_set_key_flags(struct nlattr **tb,
505 u32 *flags_key, u32 *flags_mask)
faa3ffce
OG		 506{
507 u32 key, mask;
508
d9724772
OG		 509 /* mask is mandatory for flags */
510 if (!tb[TCA_FLOWER_KEY_FLAGS_MASK])
511 return -EINVAL;
faa3ffce
OG		 512
513 key = be32_to_cpu(nla_get_u32(tb[TCA_FLOWER_KEY_FLAGS]));
d9724772 514 mask = be32_to_cpu(nla_get_u32(tb[TCA_FLOWER_KEY_FLAGS_MASK]));
faa3ffce
OG		 515
516 *flags_key = 0;
517 *flags_mask = 0;
518
519 fl_set_key_flag(key, mask, flags_key, flags_mask,
520 TCA_FLOWER_KEY_FLAGS_IS_FRAGMENT, FLOW_DIS_IS_FRAGMENT);
d9724772
OG		 521
522 return 0;
faa3ffce
OG		 523}
524
4d80cc0a
OG		 525static void fl_set_key_ip(struct nlattr **tb,
526 struct flow_dissector_key_ip *key,
527 struct flow_dissector_key_ip *mask)
528{
529 fl_set_key_val(tb, &key->tos, TCA_FLOWER_KEY_IP_TOS,
530 &mask->tos, TCA_FLOWER_KEY_IP_TOS_MASK,
531 sizeof(key->tos));
532
533 fl_set_key_val(tb, &key->ttl, TCA_FLOWER_KEY_IP_TTL,
534 &mask->ttl, TCA_FLOWER_KEY_IP_TTL_MASK,
535 sizeof(key->ttl));
536}
537
77b9900e
JP		 538static int fl_set_key(struct net *net, struct nlattr **tb,
539 struct fl_flow_key *key, struct fl_flow_key *mask)
540{
9399ae9a 541 __be16 ethertype;
d9724772 542 int ret = 0;
dd3aa3b5 543#ifdef CONFIG_NET_CLS_IND
77b9900e 544 if (tb[TCA_FLOWER_INDEV]) {
dd3aa3b5 545 int err = tcf_change_indev(net, tb[TCA_FLOWER_INDEV]);
77b9900e
JP		 546 if (err < 0)
547 return err;
548 key->indev_ifindex = err;
549 mask->indev_ifindex = 0xffffffff;
550 }
dd3aa3b5 551#endif
77b9900e
JP		 552
553 fl_set_key_val(tb, key->eth.dst, TCA_FLOWER_KEY_ETH_DST,
554 mask->eth.dst, TCA_FLOWER_KEY_ETH_DST_MASK,
555 sizeof(key->eth.dst));
556 fl_set_key_val(tb, key->eth.src, TCA_FLOWER_KEY_ETH_SRC,
557 mask->eth.src, TCA_FLOWER_KEY_ETH_SRC_MASK,
558 sizeof(key->eth.src));
66530bdf 559
0b498a52 560 if (tb[TCA_FLOWER_KEY_ETH_TYPE]) {
9399ae9a
HHZ		 561 ethertype = nla_get_be16(tb[TCA_FLOWER_KEY_ETH_TYPE]);
562
0b498a52
AB		 563 if (ethertype == htons(ETH_P_8021Q)) {
564 fl_set_key_vlan(tb, &key->vlan, &mask->vlan);
565 fl_set_key_val(tb, &key->basic.n_proto,
566 TCA_FLOWER_KEY_VLAN_ETH_TYPE,
567 &mask->basic.n_proto, TCA_FLOWER_UNSPEC,
568 sizeof(key->basic.n_proto));
569 } else {
570 key->basic.n_proto = ethertype;
571 mask->basic.n_proto = cpu_to_be16(~0);
572 }
9399ae9a 573 }
66530bdf 574
77b9900e
JP		 575 if (key->basic.n_proto == htons(ETH_P_IP) ||
576 key->basic.n_proto == htons(ETH_P_IPV6)) {
577 fl_set_key_val(tb, &key->basic.ip_proto, TCA_FLOWER_KEY_IP_PROTO,
578 &mask->basic.ip_proto, TCA_FLOWER_UNSPEC,
579 sizeof(key->basic.ip_proto));
4d80cc0a 580 fl_set_key_ip(tb, &key->ip, &mask->ip);
77b9900e 581 }
66530bdf
JHS		 582
583 if (tb[TCA_FLOWER_KEY_IPV4_SRC] || tb[TCA_FLOWER_KEY_IPV4_DST]) {
584 key->control.addr_type = FLOW_DISSECTOR_KEY_IPV4_ADDRS;
970bfcd0 585 mask->control.addr_type = ~0;
77b9900e
JP		 586 fl_set_key_val(tb, &key->ipv4.src, TCA_FLOWER_KEY_IPV4_SRC,
587 &mask->ipv4.src, TCA_FLOWER_KEY_IPV4_SRC_MASK,
588 sizeof(key->ipv4.src));
589 fl_set_key_val(tb, &key->ipv4.dst, TCA_FLOWER_KEY_IPV4_DST,
590 &mask->ipv4.dst, TCA_FLOWER_KEY_IPV4_DST_MASK,
591 sizeof(key->ipv4.dst));
66530bdf
JHS		 592 } else if (tb[TCA_FLOWER_KEY_IPV6_SRC] || tb[TCA_FLOWER_KEY_IPV6_DST]) {
593 key->control.addr_type = FLOW_DISSECTOR_KEY_IPV6_ADDRS;
970bfcd0 594 mask->control.addr_type = ~0;
77b9900e
JP		 595 fl_set_key_val(tb, &key->ipv6.src, TCA_FLOWER_KEY_IPV6_SRC,
596 &mask->ipv6.src, TCA_FLOWER_KEY_IPV6_SRC_MASK,
597 sizeof(key->ipv6.src));
598 fl_set_key_val(tb, &key->ipv6.dst, TCA_FLOWER_KEY_IPV6_DST,
599 &mask->ipv6.dst, TCA_FLOWER_KEY_IPV6_DST_MASK,
600 sizeof(key->ipv6.dst));
601 }
66530bdf 602
77b9900e
JP		 603 if (key->basic.ip_proto == IPPROTO_TCP) {
604 fl_set_key_val(tb, &key->tp.src, TCA_FLOWER_KEY_TCP_SRC,
aa72d708 605 &mask->tp.src, TCA_FLOWER_KEY_TCP_SRC_MASK,
77b9900e
JP		 606 sizeof(key->tp.src));
607 fl_set_key_val(tb, &key->tp.dst, TCA_FLOWER_KEY_TCP_DST,
aa72d708 608 &mask->tp.dst, TCA_FLOWER_KEY_TCP_DST_MASK,
77b9900e 609 sizeof(key->tp.dst));
fdfc7dd6
JP		 610 fl_set_key_val(tb, &key->tcp.flags, TCA_FLOWER_KEY_TCP_FLAGS,
611 &mask->tcp.flags, TCA_FLOWER_KEY_TCP_FLAGS_MASK,
612 sizeof(key->tcp.flags));
77b9900e
JP		 613 } else if (key->basic.ip_proto == IPPROTO_UDP) {
614 fl_set_key_val(tb, &key->tp.src, TCA_FLOWER_KEY_UDP_SRC,
aa72d708 615 &mask->tp.src, TCA_FLOWER_KEY_UDP_SRC_MASK,
77b9900e
JP		 616 sizeof(key->tp.src));
617 fl_set_key_val(tb, &key->tp.dst, TCA_FLOWER_KEY_UDP_DST,
aa72d708 618 &mask->tp.dst, TCA_FLOWER_KEY_UDP_DST_MASK,
77b9900e 619 sizeof(key->tp.dst));
5976c5f4
SH		 620 } else if (key->basic.ip_proto == IPPROTO_SCTP) {
621 fl_set_key_val(tb, &key->tp.src, TCA_FLOWER_KEY_SCTP_SRC,
622 &mask->tp.src, TCA_FLOWER_KEY_SCTP_SRC_MASK,
623 sizeof(key->tp.src));
624 fl_set_key_val(tb, &key->tp.dst, TCA_FLOWER_KEY_SCTP_DST,
625 &mask->tp.dst, TCA_FLOWER_KEY_SCTP_DST_MASK,
626 sizeof(key->tp.dst));
7b684884
SH		 627 } else if (key->basic.n_proto == htons(ETH_P_IP) &&
628 key->basic.ip_proto == IPPROTO_ICMP) {
629 fl_set_key_val(tb, &key->icmp.type, TCA_FLOWER_KEY_ICMPV4_TYPE,
630 &mask->icmp.type,
631 TCA_FLOWER_KEY_ICMPV4_TYPE_MASK,
632 sizeof(key->icmp.type));
633 fl_set_key_val(tb, &key->icmp.code, TCA_FLOWER_KEY_ICMPV4_CODE,
634 &mask->icmp.code,
635 TCA_FLOWER_KEY_ICMPV4_CODE_MASK,
636 sizeof(key->icmp.code));
637 } else if (key->basic.n_proto == htons(ETH_P_IPV6) &&
638 key->basic.ip_proto == IPPROTO_ICMPV6) {
639 fl_set_key_val(tb, &key->icmp.type, TCA_FLOWER_KEY_ICMPV6_TYPE,
640 &mask->icmp.type,
641 TCA_FLOWER_KEY_ICMPV6_TYPE_MASK,
642 sizeof(key->icmp.type));
040587af 643 fl_set_key_val(tb, &key->icmp.code, TCA_FLOWER_KEY_ICMPV6_CODE,
7b684884 644 &mask->icmp.code,
040587af 645 TCA_FLOWER_KEY_ICMPV6_CODE_MASK,
7b684884 646 sizeof(key->icmp.code));
a577d8f7
BL		 647 } else if (key->basic.n_proto == htons(ETH_P_MPLS_UC) ||
648 key->basic.n_proto == htons(ETH_P_MPLS_MC)) {
1a7fca63
BL		 649 ret = fl_set_key_mpls(tb, &key->mpls, &mask->mpls);
650 if (ret)
651 return ret;
99d31326
SH		 652 } else if (key->basic.n_proto == htons(ETH_P_ARP) ||
653 key->basic.n_proto == htons(ETH_P_RARP)) {
654 fl_set_key_val(tb, &key->arp.sip, TCA_FLOWER_KEY_ARP_SIP,
655 &mask->arp.sip, TCA_FLOWER_KEY_ARP_SIP_MASK,
656 sizeof(key->arp.sip));
657 fl_set_key_val(tb, &key->arp.tip, TCA_FLOWER_KEY_ARP_TIP,
658 &mask->arp.tip, TCA_FLOWER_KEY_ARP_TIP_MASK,
659 sizeof(key->arp.tip));
660 fl_set_key_val(tb, &key->arp.op, TCA_FLOWER_KEY_ARP_OP,
661 &mask->arp.op, TCA_FLOWER_KEY_ARP_OP_MASK,
662 sizeof(key->arp.op));
663 fl_set_key_val(tb, key->arp.sha, TCA_FLOWER_KEY_ARP_SHA,
664 mask->arp.sha, TCA_FLOWER_KEY_ARP_SHA_MASK,
665 sizeof(key->arp.sha));
666 fl_set_key_val(tb, key->arp.tha, TCA_FLOWER_KEY_ARP_THA,
667 mask->arp.tha, TCA_FLOWER_KEY_ARP_THA_MASK,
668 sizeof(key->arp.tha));
77b9900e
JP		 669 }
670
bc3103f1
AV		 671 if (tb[TCA_FLOWER_KEY_ENC_IPV4_SRC] ||
672 tb[TCA_FLOWER_KEY_ENC_IPV4_DST]) {
673 key->enc_control.addr_type = FLOW_DISSECTOR_KEY_IPV4_ADDRS;
970bfcd0 674 mask->enc_control.addr_type = ~0;
bc3103f1
AV		 675 fl_set_key_val(tb, &key->enc_ipv4.src,
676 TCA_FLOWER_KEY_ENC_IPV4_SRC,
677 &mask->enc_ipv4.src,
678 TCA_FLOWER_KEY_ENC_IPV4_SRC_MASK,
679 sizeof(key->enc_ipv4.src));
680 fl_set_key_val(tb, &key->enc_ipv4.dst,
681 TCA_FLOWER_KEY_ENC_IPV4_DST,
682 &mask->enc_ipv4.dst,
683 TCA_FLOWER_KEY_ENC_IPV4_DST_MASK,
684 sizeof(key->enc_ipv4.dst));
685 }
686
687 if (tb[TCA_FLOWER_KEY_ENC_IPV6_SRC] ||
688 tb[TCA_FLOWER_KEY_ENC_IPV6_DST]) {
689 key->enc_control.addr_type = FLOW_DISSECTOR_KEY_IPV6_ADDRS;
970bfcd0 690 mask->enc_control.addr_type = ~0;
bc3103f1
AV		 691 fl_set_key_val(tb, &key->enc_ipv6.src,
692 TCA_FLOWER_KEY_ENC_IPV6_SRC,
693 &mask->enc_ipv6.src,
694 TCA_FLOWER_KEY_ENC_IPV6_SRC_MASK,
695 sizeof(key->enc_ipv6.src));
696 fl_set_key_val(tb, &key->enc_ipv6.dst,
697 TCA_FLOWER_KEY_ENC_IPV6_DST,
698 &mask->enc_ipv6.dst,
699 TCA_FLOWER_KEY_ENC_IPV6_DST_MASK,
700 sizeof(key->enc_ipv6.dst));
701 }
702
703 fl_set_key_val(tb, &key->enc_key_id.keyid, TCA_FLOWER_KEY_ENC_KEY_ID,
eb523f42 704 &mask->enc_key_id.keyid, TCA_FLOWER_UNSPEC,
bc3103f1
AV		 705 sizeof(key->enc_key_id.keyid));
706
f4d997fd
HHZ		 707 fl_set_key_val(tb, &key->enc_tp.src, TCA_FLOWER_KEY_ENC_UDP_SRC_PORT,
708 &mask->enc_tp.src, TCA_FLOWER_KEY_ENC_UDP_SRC_PORT_MASK,
709 sizeof(key->enc_tp.src));
710
711 fl_set_key_val(tb, &key->enc_tp.dst, TCA_FLOWER_KEY_ENC_UDP_DST_PORT,
712 &mask->enc_tp.dst, TCA_FLOWER_KEY_ENC_UDP_DST_PORT_MASK,
713 sizeof(key->enc_tp.dst));
714
d9724772
OG		 715 if (tb[TCA_FLOWER_KEY_FLAGS])
716 ret = fl_set_key_flags(tb, &key->control.flags, &mask->control.flags);
faa3ffce 717
d9724772 718 return ret;
77b9900e
JP		 719}
720
721static bool fl_mask_eq(struct fl_flow_mask *mask1,
722 struct fl_flow_mask *mask2)
723{
724 const long *lmask1 = fl_key_get_start(&mask1->key, mask1);
725 const long *lmask2 = fl_key_get_start(&mask2->key, mask2);
726
727 return !memcmp(&mask1->range, &mask2->range, sizeof(mask1->range)) &&
728 !memcmp(lmask1, lmask2, fl_mask_range(mask1));
729}
730
731static const struct rhashtable_params fl_ht_params = {
732 .key_offset = offsetof(struct cls_fl_filter, mkey), /* base offset */
733 .head_offset = offsetof(struct cls_fl_filter, ht_node),
734 .automatic_shrinking = true,
735};
736
737static int fl_init_hashtable(struct cls_fl_head *head,
738 struct fl_flow_mask *mask)
739{
740 head->ht_params = fl_ht_params;
741 head->ht_params.key_len = fl_mask_range(mask);
742 head->ht_params.key_offset += mask->range.start;
743
744 return rhashtable_init(&head->ht, &head->ht_params);
745}
746
747#define FL_KEY_MEMBER_OFFSET(member) offsetof(struct fl_flow_key, member)
748#define FL_KEY_MEMBER_SIZE(member) (sizeof(((struct fl_flow_key *) 0)->member))
77b9900e 749
339ba878
HHZ		 750#define FL_KEY_IS_MASKED(mask, member) \
751 memchr_inv(((char *)mask) + FL_KEY_MEMBER_OFFSET(member), \
752 0, FL_KEY_MEMBER_SIZE(member)) \
77b9900e
JP		 753
754#define FL_KEY_SET(keys, cnt, id, member) \
755 do { \
756 keys[cnt].key_id = id; \
757 keys[cnt].offset = FL_KEY_MEMBER_OFFSET(member); \
758 cnt++; \
759 } while(0);
760
339ba878 761#define FL_KEY_SET_IF_MASKED(mask, keys, cnt, id, member) \
77b9900e 762 do { \
339ba878 763 if (FL_KEY_IS_MASKED(mask, member)) \
77b9900e
JP		 764 FL_KEY_SET(keys, cnt, id, member); \
765 } while(0);
766
767static void fl_init_dissector(struct cls_fl_head *head,
768 struct fl_flow_mask *mask)
769{
770 struct flow_dissector_key keys[FLOW_DISSECTOR_KEY_MAX];
771 size_t cnt = 0;
772
42aecaa9 773 FL_KEY_SET(keys, cnt, FLOW_DISSECTOR_KEY_CONTROL, control);
77b9900e 774 FL_KEY_SET(keys, cnt, FLOW_DISSECTOR_KEY_BASIC, basic);
339ba878
HHZ		 775 FL_KEY_SET_IF_MASKED(&mask->key, keys, cnt,
776 FLOW_DISSECTOR_KEY_ETH_ADDRS, eth);
777 FL_KEY_SET_IF_MASKED(&mask->key, keys, cnt,
778 FLOW_DISSECTOR_KEY_IPV4_ADDRS, ipv4);
779 FL_KEY_SET_IF_MASKED(&mask->key, keys, cnt,
780 FLOW_DISSECTOR_KEY_IPV6_ADDRS, ipv6);
781 FL_KEY_SET_IF_MASKED(&mask->key, keys, cnt,
782 FLOW_DISSECTOR_KEY_PORTS, tp);
4d80cc0a
OG		 783 FL_KEY_SET_IF_MASKED(&mask->key, keys, cnt,
784 FLOW_DISSECTOR_KEY_IP, ip);
fdfc7dd6
JP		 785 FL_KEY_SET_IF_MASKED(&mask->key, keys, cnt,
786 FLOW_DISSECTOR_KEY_TCP, tcp);
7b684884
SH		 787 FL_KEY_SET_IF_MASKED(&mask->key, keys, cnt,
788 FLOW_DISSECTOR_KEY_ICMP, icmp);
99d31326
SH		 789 FL_KEY_SET_IF_MASKED(&mask->key, keys, cnt,
790 FLOW_DISSECTOR_KEY_ARP, arp);
a577d8f7
BL		 791 FL_KEY_SET_IF_MASKED(&mask->key, keys, cnt,
792 FLOW_DISSECTOR_KEY_MPLS, mpls);
9399ae9a
HHZ		 793 FL_KEY_SET_IF_MASKED(&mask->key, keys, cnt,
794 FLOW_DISSECTOR_KEY_VLAN, vlan);
519d1052
HHZ		 795 FL_KEY_SET_IF_MASKED(&mask->key, keys, cnt,
796 FLOW_DISSECTOR_KEY_ENC_KEYID, enc_key_id);
797 FL_KEY_SET_IF_MASKED(&mask->key, keys, cnt,
798 FLOW_DISSECTOR_KEY_ENC_IPV4_ADDRS, enc_ipv4);
799 FL_KEY_SET_IF_MASKED(&mask->key, keys, cnt,
800 FLOW_DISSECTOR_KEY_ENC_IPV6_ADDRS, enc_ipv6);
801 if (FL_KEY_IS_MASKED(&mask->key, enc_ipv4) ||
802 FL_KEY_IS_MASKED(&mask->key, enc_ipv6))
803 FL_KEY_SET(keys, cnt, FLOW_DISSECTOR_KEY_ENC_CONTROL,
804 enc_control);
f4d997fd
HHZ		 805 FL_KEY_SET_IF_MASKED(&mask->key, keys, cnt,
806 FLOW_DISSECTOR_KEY_ENC_PORTS, enc_tp);
77b9900e
JP		 807
808 skb_flow_dissector_init(&head->dissector, keys, cnt);
809}
810
811static int fl_check_assign_mask(struct cls_fl_head *head,
812 struct fl_flow_mask *mask)
813{
814 int err;
815
816 if (head->mask_assigned) {
817 if (!fl_mask_eq(&head->mask, mask))
818 return -EINVAL;
819 else
820 return 0;
821 }
822
823 /* Mask is not assigned yet. So assign it and init hashtable
824 * according to that.
825 */
826 err = fl_init_hashtable(head, mask);
827 if (err)
828 return err;
829 memcpy(&head->mask, mask, sizeof(head->mask));
830 head->mask_assigned = true;
831
832 fl_init_dissector(head, mask);
833
834 return 0;
835}
836
837static int fl_set_parms(struct net *net, struct tcf_proto *tp,
838 struct cls_fl_filter *f, struct fl_flow_mask *mask,
839 unsigned long base, struct nlattr **tb,
840 struct nlattr *est, bool ovr)
841{
77b9900e
JP		 842 int err;
843
45507529 844 err = tcf_exts_validate(net, tp, tb, est, &f->exts, ovr);
77b9900e
JP		 845 if (err < 0)
846 return err;
847
848 if (tb[TCA_FLOWER_CLASSID]) {
849 f->res.classid = nla_get_u32(tb[TCA_FLOWER_CLASSID]);
850 tcf_bind_filter(tp, &f->res, base);
851 }
852
853 err = fl_set_key(net, tb, &f->key, &mask->key);
854 if (err)
45507529 855 return err;
77b9900e
JP		 856
857 fl_mask_update_range(mask);
858 fl_set_masked_key(&f->mkey, &f->key, mask);
859
77b9900e 860 return 0;
77b9900e
JP		 861}
862
77b9900e
JP		 863static int fl_change(struct net *net, struct sk_buff *in_skb,
864 struct tcf_proto *tp, unsigned long base,
865 u32 handle, struct nlattr **tca,
8113c095 866 void **arg, bool ovr)
77b9900e
JP		 867{
868 struct cls_fl_head *head = rtnl_dereference(tp->root);
8113c095 869 struct cls_fl_filter *fold = *arg;
77b9900e 870 struct cls_fl_filter *fnew;
39b7b6a6 871 struct nlattr **tb;
77b9900e 872 struct fl_flow_mask mask = {};
c15ab236 873 unsigned long idr_index;
77b9900e
JP		 874 int err;
875
876 if (!tca[TCA_OPTIONS])
877 return -EINVAL;
878
39b7b6a6
AB		 879 tb = kcalloc(TCA_FLOWER_MAX + 1, sizeof(struct nlattr *), GFP_KERNEL);
880 if (!tb)
881 return -ENOBUFS;
882
fceb6435
JB		 883 err = nla_parse_nested(tb, TCA_FLOWER_MAX, tca[TCA_OPTIONS],
884 fl_policy, NULL);
77b9900e 885 if (err < 0)
39b7b6a6 886 goto errout_tb;
77b9900e 887
39b7b6a6
AB		 888 if (fold && handle && fold->handle != handle) {
889 err = -EINVAL;
890 goto errout_tb;
891 }
77b9900e
JP		 892
893 fnew = kzalloc(sizeof(*fnew), GFP_KERNEL);
39b7b6a6
AB		 894 if (!fnew) {
895 err = -ENOBUFS;
896 goto errout_tb;
897 }
77b9900e 898
b9a24bb7
WC		 899 err = tcf_exts_init(&fnew->exts, TCA_FLOWER_ACT, 0);
900 if (err < 0)
901 goto errout;
77b9900e
JP		 902
903 if (!handle) {
c15ab236
CM		 904 err = idr_alloc_ext(&head->handle_idr, fnew, &idr_index,
905 1, 0x80000000, GFP_KERNEL);
906 if (err)
77b9900e 907 goto errout;
c15ab236
CM		 908 fnew->handle = idr_index;
909 }
910
911 /* user specifies a handle and it doesn't exist */
912 if (handle && !fold) {
913 err = idr_alloc_ext(&head->handle_idr, fnew, &idr_index,
914 handle, handle + 1, GFP_KERNEL);
915 if (err)
916 goto errout;
917 fnew->handle = idr_index;
77b9900e 918 }
77b9900e 919
e69985c6
AV		 920 if (tb[TCA_FLOWER_FLAGS]) {
921 fnew->flags = nla_get_u32(tb[TCA_FLOWER_FLAGS]);
922
923 if (!tc_flags_valid(fnew->flags)) {
924 err = -EINVAL;
fe2502e4 925 goto errout_idr;
e69985c6
AV		 926 }
927 }
5b33f488 928
77b9900e
JP		 929 err = fl_set_parms(net, tp, fnew, &mask, base, tb, tca[TCA_RATE], ovr);
930 if (err)
fe2502e4 931 goto errout_idr;
77b9900e
JP		 932
933 err = fl_check_assign_mask(head, &mask);
934 if (err)
fe2502e4 935 goto errout_idr;
77b9900e 936
e8eb36cd 937 if (!tc_skip_sw(fnew->flags)) {
a3308d8f
PB		 938 if (!fold && fl_lookup(head, &fnew->mkey)) {
939 err = -EEXIST;
fe2502e4 940 goto errout_idr;
a3308d8f
PB		 941 }
942
e69985c6
AV		 943 err = rhashtable_insert_fast(&head->ht, &fnew->ht_node,
944 head->ht_params);
945 if (err)
fe2502e4 946 goto errout_idr;
e69985c6 947 }
5b33f488 948
79685219
HHZ		 949 if (!tc_skip_hw(fnew->flags)) {
950 err = fl_hw_replace_filter(tp,
951 &head->dissector,
952 &mask.key,
3036dab6 953 fnew);
79685219 954 if (err)
fe2502e4 955 goto errout_idr;
79685219 956 }
5b33f488 957
55593960
OG		 958 if (!tc_in_hw(fnew->flags))
959 fnew->flags |= TCA_CLS_FLAGS_NOT_IN_HW;
960
5b33f488 961 if (fold) {
725cbb62
JP		 962 if (!tc_skip_sw(fold->flags))
963 rhashtable_remove_fast(&head->ht, &fold->ht_node,
964 head->ht_params);
79685219 965 if (!tc_skip_hw(fold->flags))
3036dab6 966 fl_hw_destroy_filter(tp, fold);
5b33f488 967 }
77b9900e 968
8113c095 969 *arg = fnew;
77b9900e
JP		 970
971 if (fold) {
c15ab236
CM		 972 fnew->handle = handle;
973 idr_replace_ext(&head->handle_idr, fnew, fnew->handle);
ff3532f2 974 list_replace_rcu(&fold->list, &fnew->list);
77b9900e
JP		 975 tcf_unbind_filter(tp, &fold->res);
976 call_rcu(&fold->rcu, fl_destroy_filter);
977 } else {
978 list_add_tail_rcu(&fnew->list, &head->filters);
979 }
980
39b7b6a6 981 kfree(tb);
77b9900e
JP		 982 return 0;
983
fe2502e4
CW		 984errout_idr:
985 if (fnew->handle)
986 idr_remove_ext(&head->handle_idr, fnew->handle);
77b9900e 987errout:
b9a24bb7 988 tcf_exts_destroy(&fnew->exts);
77b9900e 989 kfree(fnew);
39b7b6a6
AB		 990errout_tb:
991 kfree(tb);
77b9900e
JP		 992 return err;
993}
994
8113c095 995static int fl_delete(struct tcf_proto *tp, void *arg, bool *last)
77b9900e
JP		 996{
997 struct cls_fl_head *head = rtnl_dereference(tp->root);
8113c095 998 struct cls_fl_filter *f = arg;
77b9900e 999
725cbb62
JP		 1000 if (!tc_skip_sw(f->flags))
1001 rhashtable_remove_fast(&head->ht, &f->ht_node,
1002 head->ht_params);
13fa876e 1003 __fl_delete(tp, f);
763dbf63 1004 *last = list_empty(&head->filters);
77b9900e
JP		 1005 return 0;
1006}
1007
1008static void fl_walk(struct tcf_proto *tp, struct tcf_walker *arg)
1009{
1010 struct cls_fl_head *head = rtnl_dereference(tp->root);
1011 struct cls_fl_filter *f;
1012
1013 list_for_each_entry_rcu(f, &head->filters, list) {
1014 if (arg->count < arg->skip)
1015 goto skip;
8113c095 1016 if (arg->fn(tp, f, arg) < 0) {
77b9900e
JP		 1017 arg->stop = 1;
1018 break;
1019 }
1020skip:
1021 arg->count++;
1022 }
1023}
1024
1025static int fl_dump_key_val(struct sk_buff *skb,
1026 void *val, int val_type,
1027 void *mask, int mask_type, int len)
1028{
1029 int err;
1030
1031 if (!memchr_inv(mask, 0, len))
1032 return 0;
1033 err = nla_put(skb, val_type, len, val);
1034 if (err)
1035 return err;
1036 if (mask_type != TCA_FLOWER_UNSPEC) {
1037 err = nla_put(skb, mask_type, len, mask);
1038 if (err)
1039 return err;
1040 }
1041 return 0;
1042}
1043
a577d8f7
BL		 1044static int fl_dump_key_mpls(struct sk_buff *skb,
1045 struct flow_dissector_key_mpls *mpls_key,
1046 struct flow_dissector_key_mpls *mpls_mask)
1047{
1048 int err;
1049
1050 if (!memchr_inv(mpls_mask, 0, sizeof(*mpls_mask)))
1051 return 0;
1052 if (mpls_mask->mpls_ttl) {
1053 err = nla_put_u8(skb, TCA_FLOWER_KEY_MPLS_TTL,
1054 mpls_key->mpls_ttl);
1055 if (err)
1056 return err;
1057 }
1058 if (mpls_mask->mpls_tc) {
1059 err = nla_put_u8(skb, TCA_FLOWER_KEY_MPLS_TC,
1060 mpls_key->mpls_tc);
1061 if (err)
1062 return err;
1063 }
1064 if (mpls_mask->mpls_label) {
1065 err = nla_put_u32(skb, TCA_FLOWER_KEY_MPLS_LABEL,
1066 mpls_key->mpls_label);
1067 if (err)
1068 return err;
1069 }
1070 if (mpls_mask->mpls_bos) {
1071 err = nla_put_u8(skb, TCA_FLOWER_KEY_MPLS_BOS,
1072 mpls_key->mpls_bos);
1073 if (err)
1074 return err;
1075 }
1076 return 0;
1077}
1078
4d80cc0a
OG		 1079static int fl_dump_key_ip(struct sk_buff *skb,
1080 struct flow_dissector_key_ip *key,
1081 struct flow_dissector_key_ip *mask)
1082{
1083 if (fl_dump_key_val(skb, &key->tos, TCA_FLOWER_KEY_IP_TOS, &mask->tos,
1084 TCA_FLOWER_KEY_IP_TOS_MASK, sizeof(key->tos)) ||
1085 fl_dump_key_val(skb, &key->ttl, TCA_FLOWER_KEY_IP_TTL, &mask->ttl,
1086 TCA_FLOWER_KEY_IP_TTL_MASK, sizeof(key->ttl)))
1087 return -1;
1088
1089 return 0;
1090}
1091
9399ae9a
HHZ		 1092static int fl_dump_key_vlan(struct sk_buff *skb,
1093 struct flow_dissector_key_vlan *vlan_key,
1094 struct flow_dissector_key_vlan *vlan_mask)
1095{
1096 int err;
1097
1098 if (!memchr_inv(vlan_mask, 0, sizeof(*vlan_mask)))
1099 return 0;
1100 if (vlan_mask->vlan_id) {
1101 err = nla_put_u16(skb, TCA_FLOWER_KEY_VLAN_ID,
1102 vlan_key->vlan_id);
1103 if (err)
1104 return err;
1105 }
1106 if (vlan_mask->vlan_priority) {
1107 err = nla_put_u8(skb, TCA_FLOWER_KEY_VLAN_PRIO,
1108 vlan_key->vlan_priority);
1109 if (err)
1110 return err;
1111 }
1112 return 0;
1113}
1114
faa3ffce
OG		 1115static void fl_get_key_flag(u32 dissector_key, u32 dissector_mask,
1116 u32 *flower_key, u32 *flower_mask,
1117 u32 flower_flag_bit, u32 dissector_flag_bit)
1118{
1119 if (dissector_mask & dissector_flag_bit) {
1120 *flower_mask |= flower_flag_bit;
1121 if (dissector_key & dissector_flag_bit)
1122 *flower_key |= flower_flag_bit;
1123 }
1124}
1125
1126static int fl_dump_key_flags(struct sk_buff *skb, u32 flags_key, u32 flags_mask)
1127{
1128 u32 key, mask;
1129 __be32 _key, _mask;
1130 int err;
1131
1132 if (!memchr_inv(&flags_mask, 0, sizeof(flags_mask)))
1133 return 0;
1134
1135 key = 0;
1136 mask = 0;
1137
1138 fl_get_key_flag(flags_key, flags_mask, &key, &mask,
1139 TCA_FLOWER_KEY_FLAGS_IS_FRAGMENT, FLOW_DIS_IS_FRAGMENT);
1140
1141 _key = cpu_to_be32(key);
1142 _mask = cpu_to_be32(mask);
1143
1144 err = nla_put(skb, TCA_FLOWER_KEY_FLAGS, 4, &_key);
1145 if (err)
1146 return err;
1147
1148 return nla_put(skb, TCA_FLOWER_KEY_FLAGS_MASK, 4, &_mask);
1149}
1150
8113c095 1151static int fl_dump(struct net *net, struct tcf_proto *tp, void *fh,
77b9900e
JP		 1152 struct sk_buff *skb, struct tcmsg *t)
1153{
1154 struct cls_fl_head *head = rtnl_dereference(tp->root);
8113c095 1155 struct cls_fl_filter *f = fh;
77b9900e
JP		 1156 struct nlattr *nest;
1157 struct fl_flow_key *key, *mask;
1158
1159 if (!f)
1160 return skb->len;
1161
1162 t->tcm_handle = f->handle;
1163
1164 nest = nla_nest_start(skb, TCA_OPTIONS);
1165 if (!nest)
1166 goto nla_put_failure;
1167
1168 if (f->res.classid &&
1169 nla_put_u32(skb, TCA_FLOWER_CLASSID, f->res.classid))
1170 goto nla_put_failure;
1171
1172 key = &f->key;
1173 mask = &head->mask.key;
1174
1175 if (mask->indev_ifindex) {
1176 struct net_device *dev;
1177
1178 dev = __dev_get_by_index(net, key->indev_ifindex);
1179 if (dev && nla_put_string(skb, TCA_FLOWER_INDEV, dev->name))
1180 goto nla_put_failure;
1181 }
1182
79685219
HHZ		 1183 if (!tc_skip_hw(f->flags))
1184 fl_hw_update_stats(tp, f);
10cbc684 1185
77b9900e
JP		 1186 if (fl_dump_key_val(skb, key->eth.dst, TCA_FLOWER_KEY_ETH_DST,
1187 mask->eth.dst, TCA_FLOWER_KEY_ETH_DST_MASK,
1188 sizeof(key->eth.dst)) ||
1189 fl_dump_key_val(skb, key->eth.src, TCA_FLOWER_KEY_ETH_SRC,
1190 mask->eth.src, TCA_FLOWER_KEY_ETH_SRC_MASK,
1191 sizeof(key->eth.src)) ||
1192 fl_dump_key_val(skb, &key->basic.n_proto, TCA_FLOWER_KEY_ETH_TYPE,
1193 &mask->basic.n_proto, TCA_FLOWER_UNSPEC,
1194 sizeof(key->basic.n_proto)))
1195 goto nla_put_failure;
9399ae9a 1196
a577d8f7
BL		 1197 if (fl_dump_key_mpls(skb, &key->mpls, &mask->mpls))
1198 goto nla_put_failure;
1199
9399ae9a
HHZ		 1200 if (fl_dump_key_vlan(skb, &key->vlan, &mask->vlan))
1201 goto nla_put_failure;
1202
77b9900e
JP		 1203 if ((key->basic.n_proto == htons(ETH_P_IP) ||
1204 key->basic.n_proto == htons(ETH_P_IPV6)) &&
4d80cc0a 1205 (fl_dump_key_val(skb, &key->basic.ip_proto, TCA_FLOWER_KEY_IP_PROTO,
77b9900e 1206 &mask->basic.ip_proto, TCA_FLOWER_UNSPEC,
4d80cc0a
OG		 1207 sizeof(key->basic.ip_proto)) ||
1208 fl_dump_key_ip(skb, &key->ip, &mask->ip)))
77b9900e
JP		 1209 goto nla_put_failure;
1210
c3f83241 1211 if (key->control.addr_type == FLOW_DISSECTOR_KEY_IPV4_ADDRS &&
77b9900e
JP		 1212 (fl_dump_key_val(skb, &key->ipv4.src, TCA_FLOWER_KEY_IPV4_SRC,
1213 &mask->ipv4.src, TCA_FLOWER_KEY_IPV4_SRC_MASK,
1214 sizeof(key->ipv4.src)) ||
1215 fl_dump_key_val(skb, &key->ipv4.dst, TCA_FLOWER_KEY_IPV4_DST,
1216 &mask->ipv4.dst, TCA_FLOWER_KEY_IPV4_DST_MASK,
1217 sizeof(key->ipv4.dst))))
1218 goto nla_put_failure;
c3f83241 1219 else if (key->control.addr_type == FLOW_DISSECTOR_KEY_IPV6_ADDRS &&
77b9900e
JP		 1220 (fl_dump_key_val(skb, &key->ipv6.src, TCA_FLOWER_KEY_IPV6_SRC,
1221 &mask->ipv6.src, TCA_FLOWER_KEY_IPV6_SRC_MASK,
1222 sizeof(key->ipv6.src)) ||
1223 fl_dump_key_val(skb, &key->ipv6.dst, TCA_FLOWER_KEY_IPV6_DST,
1224 &mask->ipv6.dst, TCA_FLOWER_KEY_IPV6_DST_MASK,
1225 sizeof(key->ipv6.dst))))
1226 goto nla_put_failure;
1227
1228 if (key->basic.ip_proto == IPPROTO_TCP &&
1229 (fl_dump_key_val(skb, &key->tp.src, TCA_FLOWER_KEY_TCP_SRC,
aa72d708 1230 &mask->tp.src, TCA_FLOWER_KEY_TCP_SRC_MASK,
77b9900e
JP		 1231 sizeof(key->tp.src)) ||
1232 fl_dump_key_val(skb, &key->tp.dst, TCA_FLOWER_KEY_TCP_DST,
aa72d708 1233 &mask->tp.dst, TCA_FLOWER_KEY_TCP_DST_MASK,
fdfc7dd6
JP		 1234 sizeof(key->tp.dst)) ||
1235 fl_dump_key_val(skb, &key->tcp.flags, TCA_FLOWER_KEY_TCP_FLAGS,
1236 &mask->tcp.flags, TCA_FLOWER_KEY_TCP_FLAGS_MASK,
1237 sizeof(key->tcp.flags))))
77b9900e
JP		 1238 goto nla_put_failure;
1239 else if (key->basic.ip_proto == IPPROTO_UDP &&
1240 (fl_dump_key_val(skb, &key->tp.src, TCA_FLOWER_KEY_UDP_SRC,
aa72d708 1241 &mask->tp.src, TCA_FLOWER_KEY_UDP_SRC_MASK,
77b9900e
JP		 1242 sizeof(key->tp.src)) ||
1243 fl_dump_key_val(skb, &key->tp.dst, TCA_FLOWER_KEY_UDP_DST,
aa72d708 1244 &mask->tp.dst, TCA_FLOWER_KEY_UDP_DST_MASK,
5976c5f4
SH		 1245 sizeof(key->tp.dst))))
1246 goto nla_put_failure;
1247 else if (key->basic.ip_proto == IPPROTO_SCTP &&
1248 (fl_dump_key_val(skb, &key->tp.src, TCA_FLOWER_KEY_SCTP_SRC,
1249 &mask->tp.src, TCA_FLOWER_KEY_SCTP_SRC_MASK,
1250 sizeof(key->tp.src)) ||
1251 fl_dump_key_val(skb, &key->tp.dst, TCA_FLOWER_KEY_SCTP_DST,
1252 &mask->tp.dst, TCA_FLOWER_KEY_SCTP_DST_MASK,
77b9900e
JP		 1253 sizeof(key->tp.dst))))
1254 goto nla_put_failure;
7b684884
SH		 1255 else if (key->basic.n_proto == htons(ETH_P_IP) &&
1256 key->basic.ip_proto == IPPROTO_ICMP &&
1257 (fl_dump_key_val(skb, &key->icmp.type,
1258 TCA_FLOWER_KEY_ICMPV4_TYPE, &mask->icmp.type,
1259 TCA_FLOWER_KEY_ICMPV4_TYPE_MASK,
1260 sizeof(key->icmp.type)) ||
1261 fl_dump_key_val(skb, &key->icmp.code,
1262 TCA_FLOWER_KEY_ICMPV4_CODE, &mask->icmp.code,
1263 TCA_FLOWER_KEY_ICMPV4_CODE_MASK,
1264 sizeof(key->icmp.code))))
1265 goto nla_put_failure;
1266 else if (key->basic.n_proto == htons(ETH_P_IPV6) &&
1267 key->basic.ip_proto == IPPROTO_ICMPV6 &&
1268 (fl_dump_key_val(skb, &key->icmp.type,
1269 TCA_FLOWER_KEY_ICMPV6_TYPE, &mask->icmp.type,
1270 TCA_FLOWER_KEY_ICMPV6_TYPE_MASK,
1271 sizeof(key->icmp.type)) ||
1272 fl_dump_key_val(skb, &key->icmp.code,
1273 TCA_FLOWER_KEY_ICMPV6_CODE, &mask->icmp.code,
1274 TCA_FLOWER_KEY_ICMPV6_CODE_MASK,
1275 sizeof(key->icmp.code))))
1276 goto nla_put_failure;
99d31326
SH		 1277 else if ((key->basic.n_proto == htons(ETH_P_ARP) ||
1278 key->basic.n_proto == htons(ETH_P_RARP)) &&
1279 (fl_dump_key_val(skb, &key->arp.sip,
1280 TCA_FLOWER_KEY_ARP_SIP, &mask->arp.sip,
1281 TCA_FLOWER_KEY_ARP_SIP_MASK,
1282 sizeof(key->arp.sip)) ||
1283 fl_dump_key_val(skb, &key->arp.tip,
1284 TCA_FLOWER_KEY_ARP_TIP, &mask->arp.tip,
1285 TCA_FLOWER_KEY_ARP_TIP_MASK,
1286 sizeof(key->arp.tip)) ||
1287 fl_dump_key_val(skb, &key->arp.op,
1288 TCA_FLOWER_KEY_ARP_OP, &mask->arp.op,
1289 TCA_FLOWER_KEY_ARP_OP_MASK,
1290 sizeof(key->arp.op)) ||
1291 fl_dump_key_val(skb, key->arp.sha, TCA_FLOWER_KEY_ARP_SHA,
1292 mask->arp.sha, TCA_FLOWER_KEY_ARP_SHA_MASK,
1293 sizeof(key->arp.sha)) ||
1294 fl_dump_key_val(skb, key->arp.tha, TCA_FLOWER_KEY_ARP_THA,
1295 mask->arp.tha, TCA_FLOWER_KEY_ARP_THA_MASK,
1296 sizeof(key->arp.tha))))
1297 goto nla_put_failure;
77b9900e 1298
bc3103f1
AV		 1299 if (key->enc_control.addr_type == FLOW_DISSECTOR_KEY_IPV4_ADDRS &&
1300 (fl_dump_key_val(skb, &key->enc_ipv4.src,
1301 TCA_FLOWER_KEY_ENC_IPV4_SRC, &mask->enc_ipv4.src,
1302 TCA_FLOWER_KEY_ENC_IPV4_SRC_MASK,
1303 sizeof(key->enc_ipv4.src)) ||
1304 fl_dump_key_val(skb, &key->enc_ipv4.dst,
1305 TCA_FLOWER_KEY_ENC_IPV4_DST, &mask->enc_ipv4.dst,
1306 TCA_FLOWER_KEY_ENC_IPV4_DST_MASK,
1307 sizeof(key->enc_ipv4.dst))))
1308 goto nla_put_failure;
1309 else if (key->enc_control.addr_type == FLOW_DISSECTOR_KEY_IPV6_ADDRS &&
1310 (fl_dump_key_val(skb, &key->enc_ipv6.src,
1311 TCA_FLOWER_KEY_ENC_IPV6_SRC, &mask->enc_ipv6.src,
1312 TCA_FLOWER_KEY_ENC_IPV6_SRC_MASK,
1313 sizeof(key->enc_ipv6.src)) ||
1314 fl_dump_key_val(skb, &key->enc_ipv6.dst,
1315 TCA_FLOWER_KEY_ENC_IPV6_DST,
1316 &mask->enc_ipv6.dst,
1317 TCA_FLOWER_KEY_ENC_IPV6_DST_MASK,
1318 sizeof(key->enc_ipv6.dst))))
1319 goto nla_put_failure;
1320
1321 if (fl_dump_key_val(skb, &key->enc_key_id, TCA_FLOWER_KEY_ENC_KEY_ID,
eb523f42 1322 &mask->enc_key_id, TCA_FLOWER_UNSPEC,
f4d997fd
HHZ		 1323 sizeof(key->enc_key_id)) ||
1324 fl_dump_key_val(skb, &key->enc_tp.src,
1325 TCA_FLOWER_KEY_ENC_UDP_SRC_PORT,
1326 &mask->enc_tp.src,
1327 TCA_FLOWER_KEY_ENC_UDP_SRC_PORT_MASK,
1328 sizeof(key->enc_tp.src)) ||
1329 fl_dump_key_val(skb, &key->enc_tp.dst,
1330 TCA_FLOWER_KEY_ENC_UDP_DST_PORT,
1331 &mask->enc_tp.dst,
1332 TCA_FLOWER_KEY_ENC_UDP_DST_PORT_MASK,
1333 sizeof(key->enc_tp.dst)))
bc3103f1
AV		 1334 goto nla_put_failure;
1335
faa3ffce
OG		 1336 if (fl_dump_key_flags(skb, key->control.flags, mask->control.flags))
1337 goto nla_put_failure;
1338
749e6720
OG		 1339 if (f->flags && nla_put_u32(skb, TCA_FLOWER_FLAGS, f->flags))
1340 goto nla_put_failure;
e69985c6 1341
77b9900e
JP		 1342 if (tcf_exts_dump(skb, &f->exts))
1343 goto nla_put_failure;
1344
1345 nla_nest_end(skb, nest);
1346
1347 if (tcf_exts_dump_stats(skb, &f->exts) < 0)
1348 goto nla_put_failure;
1349
1350 return skb->len;
1351
1352nla_put_failure:
1353 nla_nest_cancel(skb, nest);
1354 return -1;
1355}
1356
07d79fc7
CW		 1357static void fl_bind_class(void *fh, u32 classid, unsigned long cl)
1358{
1359 struct cls_fl_filter *f = fh;
1360
1361 if (f && f->res.classid == classid)
1362 f->res.class = cl;
1363}
1364
77b9900e
JP		 1365static struct tcf_proto_ops cls_fl_ops __read_mostly = {
1366 .kind = "flower",
1367 .classify = fl_classify,
1368 .init = fl_init,
1369 .destroy = fl_destroy,
1370 .get = fl_get,
1371 .change = fl_change,
1372 .delete = fl_delete,
1373 .walk = fl_walk,
1374 .dump = fl_dump,
07d79fc7 1375 .bind_class = fl_bind_class,
77b9900e
JP		 1376 .owner = THIS_MODULE,
1377};
1378
1379static int __init cls_fl_init(void)
1380{
1381 return register_tcf_proto_ops(&cls_fl_ops);
1382}
1383
1384static void __exit cls_fl_exit(void)
1385{
1386 unregister_tcf_proto_ops(&cls_fl_ops);
1387}
1388
1389module_init(cls_fl_init);
1390module_exit(cls_fl_exit);
1391
1392MODULE_AUTHOR("Jiri Pirko <jiri@resnulli.us>");
1393MODULE_DESCRIPTION("Flower classifier");
1394MODULE_LICENSE("GPL v2");
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